Need update you blog post:
https://www.qt.io/blog/2018/11/06/sharing-files-android-ios-qt-app-part-4

I probe compile with Qt 5.14.1.  Created apk and started on my phone: have one main screen in application (sea screenshot).

I attached log for build with default gradle from github (sources) of ekkesSHAREexample
gradle:2.2.3 (sea attached file build-log-default.txt)

Probe upgrade gradle to 3.2.0 and give also not workable apk in android (file build-log-3.2.0.txt attached)

And as final build with default 3.5.0 and 3.5.2 gradle for Qt 5.14 release and give error:
Initialized native services in: /root/.gradle/native
Creating new cache for fileHashes, path /root/.gradle/caches/3.4/fileHashes/fileHashes.bin, access org.gradle.cache.internal.DefaultCacheAccess@7357a011
Creating new cache for plugin-use-metadata, path /root/.gradle/caches/3.4/plugin-resolution/plugin-use-metadata.bin, access org.gradle.cache.internal.DefaultCacheAccess@71529963
Creating new cache for client-status, path /root/.gradle/caches/3.4/plugin-resolution/client-status.bin, access org.gradle.cache.internal.DefaultCacheAccess@71529963
Starting Build
Settings evaluated using settings file '/master/settings.gradle'.
Projects loaded. Root project using build file '/ekkesSHAREexample/android-build/build.gradle'.
Included projects: [root project 'android-build']
Evaluating root project 'android-build' using build file '/ekkesSHAREexample/android-build/build.gradle'.
Compiling build file '/ekkesSHAREexample/android-build/build.gradle' using SubsetScriptTransformer.

FAILURE: Build failed with an exception.

• Where:
  Build file '/ekkesSHAREexample/android-build/build.gradle' line: 3

• What went wrong:
  A problem occurred evaluating root project 'android-build'.
  > Could not find method google() for arguments [] on repository container of type org.gradle.api.internal.artifacts.dsl.DefaultRepositoryHandler.

• Try:
  Run with --stacktrace option to get the stack trace. Run with --debug option to get more log output.

BUILD FAILED

Apk not created. For Qt 5.14.0 users can't build this application with default gradle (3.5.0) for Qt 5.14 version!!!

Adb logcat for booth version apk (with gradle from github version 2.2.3 and with version 3.2.0) file share-qt-514-adb.log